Outside metal car-roof.



J. J. HOFFMAN.

OUTSIDE METAL GAR R001.

Patented Jan. 18, 1910.

5 SHEETS SHEET l.

l 1 A \r Il IUVIIIIIU.

J. J. HOFFMAN. OUTSIDE METAL CAR ROOF. APILIGATION FILED JAlLzz, 1909.

Patented Jan. 18,1910.

SHEETS-SHEET z.

J. J. HOFFMAN.

OUTSIDE METAL GAR ROOF.

APPLIGAMON :FILED 11111.22, 1909.

946,729. y i Patented Jan.1s,1910

5 SHEETS-SHEET 3y J. J. HOFFMAN.

OUTSIDE METAL GAR ROOF.

APPLIGATION FILED JAILZZ, 1909.

946,729. Patented Jan. 18, 1910.

l .lf .9

5 SHEETS-SHEET 4.

J. J. HOFFMAN. OUTSIDE METAL CAR R001".

APPLICATION .'FILED JAN.22, 1909.

Patented J an. 18', 1910.

5 SHEETS-SHEET 5.

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- UNITED sra-'ras JOHN J. HOFFMAN, or sT. ,'IIOUIs, MIssOURI,` AssIGNoii. 'ro PETRQH. MURPHY.' OF

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PATIENT, Ormea.

MIssloURI.

'.OUTSIDE METALcan-ROOF.Y

sienes.

` Specification of Letters Patent. vrappiisatioa inea January 22, 1909.A serial No. 473,610.

To all whom it may concern: s. y s

Be' itknown that I, JOHN J. HOFFMAN, a

.` citizen 'of the United States, and a resident of tliecity of St. Louis and State ot' Mis,n

souri, have inventeda ,certain new and neef' able joint eapor Cooperation With the side` y margins of adjacent sheets; also to provide las 4 a .suitable corner cap; and to attain other advantages hereinafter appearing? i 'I'lie invention consists lin the parts! and in the arranfeiiientjs'- and combinations of parts hereinafter described and claimed. In the' accompanying drawing, which forms part of this specification, and wherein like symbols refer to like parts Wherever they occur, Figure 1 is a verticall cross sectional view of a portion of a car provided with my roof; Fig.- 2 is a detail elevation at the endof a joint, With .-tlie 'securing clip y removed.; F ig, 3 is a detail plan view of a roofing, sheet; Fig. 4 is a side elevation of a roof sheet; 'Figi 5y is a cross section on'the line 5-5 of Fig. 4; Fig. 6 is a plan view of a joint cap; F ig. 7 is aside elevation of a joint cap; Fig. 8 is a cross section of a joint'cap on the line S-'S of Fig. 7 F ig. 9 is a plan view of a corner cap; Fig. 104 is a planA View of the blank` from; which 'A the corner cap is made; Fig. ll-'is a cross section of the corner cap on theline 11-11 of Fig.

9: Fig. 12 is a longitudinal sectional view illustrating almodiied form of construction, the parts back of the section plane being in perspective; and,- Fig.y 13 is a cross section of a. portion of a-roof embodying the construction of Fig. 12.

The substructure of the'car is of. any suitable type. In the construction illustrated in-thedrawing, the carcomprises a sideplate .1, side sheathing 2, a ridge pole 3, wooden roof sheathing 4, and a fascia 5, Whose upper 'surface .sush With the roof sheathing and Whose outer ed'geis rounded.

Themetal roof sheets 6 extend from the are provided withrebentupstandingiianges 7. The ridge flange of one sheet overlaps the'. ridgeiange'of1 the sheet on theopposite -side of the car; but,with this exception, 4the several sheets do not -interlock directly With each other at anypoint. rThe outer end 8 to the curvature of the rounded edge of the eaves and projects a slight distancel downwardly alongsideof the fascia.-

lroot` sheets to tearlengthwise Of the car, `such .tear beginning at aV point in the side 'margin of the sheet close to the eaves;y 'In outercorners 9 of. thesheets of the present vroof are doubled hack far enough to' present a double thickness of metal at their side margins for a short distance above the eaves. Preferably, the metal is bent back grees inclination to the side and end margms of the sheet. The side margins of the rebent flange.` In order to stiften thev side marginal portions of the roof sheets, shal- 'low corrugations orupstanding ribs 12are forating thesheets. The adjacent sheets do not interlock directly with each other at the sides, butl their side marginal portions are and over thev eaves. The jointl capcoinprises a sheet metal strip Whose middleV portion is grooved jto receive the iipstandmg side normally spaced slightly apart 'from' each other. The side portioiis of the joint caps Or gations or ribs '14 Which are somewhat Wider than the stiiening corrugatiojis or roof sheets may slide to a. limited extent -Witheaves to the ridge and at Atheir vridge ends' of each sheet'is bent in 'a curve conforming Experience teaches that,I in ordinaiyitypes"` of metal car roofs, there is a tendency for the order to guardagainstjthis tendency, thealong a line of approximately forty-ivedef roof sheets lare bent upwardly to. formv covered by a joint cap 13 which extendsv t0 strips are provided Wit-hupstanding corru- 'Patented aan. 1s, 1910.`

surface of the upstanding portion of the.

formed parallel With the edges Without periianges of the respective sheets, which are 'ribs 12- on the respective sheets, whereby the wardly of the si out lifting the joint cap.l The ridge end or the joint cap is kturned upwardly to form an upstanding flange a1 i in order to pro- -vide for the bendingr upwardly of such ange, a slot 16 is cut in the ridge end of the groove and thesur `lus metal .17 at each side ofthe groove is oubled back atwise against the upstanding ange. Likewise,

the metal of the uppermost part of the groove at the eaves end is removed, as indi-` fastening devices extend through the clips without perforatin either the roof sheets or the joint caps. he. portion of the clip above the fastening device is oiset to pro vide a space, between it and the eaves,

. by a nut 27 on the interior of the ear.

which is adapted to receive the downturned end of the joint cap without binding it. The upper portion ofthe clip has an inwardly projecting grooved or hooded portion 22 adapted to overlap the upstan'ding portion of the joint cap without binding it. Preferably, this clip embodies the construction described in detail in the copending application'of' Walter P. Murphy, No. 467,479 to which reference is. made for more specific description.

As stated above, the ridge --langes 'of the roof sheets interlock with each other. The joint caps, however, terminate short of said interlocking iianges. The parts are .secured at the ridge by means of corner caps 23, which are provided with intersecting grooves adapted to receive the upstanding portions 'of the-roof: Sheets and of the joint caps. In thecentraliportionof the corner cap is a hole24 for thelsecuring bolt 25 which extends'downwardly through the running'board saddle-26 (which rests on the corner caps), vthe cornercap, the roof sheathing and the ridge pole, and is secuilvsed y this arrangement, the parts are secured without perforating either the joint caps or the roof sheets; 1n order, however,to give the sheets a -wider play, the metal at the endinost portions of the ridge flange of the roo-t sheets is cut away to a limited extent, as indicated at 28. The longitudinal corruuations of the corner caps are slightl Wider than the normal .distance between tie lines at which opposite joint caps are turned up at the ridge; and the transverse grooves in the corner cap are slightly wider than the 4of ben 1 maximum width of the corrugations o`f the 6d grooves are `formed ,in this "blank so that each of the concave arcs Iconstitutes the end margin of a roove, Thewidth of the hole, however, is s ightly less than the portion of the strip that isbent to form lthe correspondin groove or channel. In the process ngv the ortions Yof the metal on opposite sides of t e hole are brought closer together, while the cornerportions of adjacent sides are ,causedfto overlap. By this arrangementfa'll but the middle portion of theghole is closed, so that the corner cap is substantially 'water tight exce t at the uppermost portion thereof whic is adjacent to the bolt. The sides'of the corner cap`s areinclin'ed to con-formto'lthe pitch of the roof.

In the construction .illustrated in Figs.

12 and 13, the corner ca 23' is made as a malleable casting. 'In t is construction, a Woodenbatten vor spacing strip 31 is secured to the roof sheathing between the upstanding side edges or anges of adjacent roof sheets, the batten'being slightly higher than such upstandin edges. The joint cap 12 rests upon this atten and is secured bythe corner cap at the ridge and by the roof clip at the eaves. This joint cap is a strip of sheet metal whose marginal portions extend overl and beyond the side margins of the respective roof sheets and are thence bent downwardly to overlap the saine. By thisconstruction, space is provided to per it free movement of. the side anges of t e roof sheets between the hatten and the'joint cap. In order to stifen the joint cap, its downward/marginal portions are provided with vertical corrugations 32.

Obviously, my device admits `of consider able modification without departing from my invention, and therefore I do not wish to be limited to the speciiic construction shown and described.

What I claim is:

1. A car roof comprising roof sheets exi blank, the corners atone end of which are ed to receive said flanges and with upstanding corrugations adapted to bear against both sides of the corrugations in the roof sheets and thereby aid in positioning said sheets. i

2. A car roof comprising roof sheets arranged transversely of the car and having their outer end portions extending beyond the eaves,and means for securing said roof sheets in place, the outer corners of said roof sheets being doubled back far enough to secure a double thickness of the metal at the margins for a short distance above the eaves.

3. A car roof comprising roof sheets arranged transversely of the car and having their outer end portions extending beyond the eaves, and means for securing said.roof sheets movably in place, the outer corners of said roof sheets being doubled backfar enough to secure a double thickness of .the metal at the side margins for a short distance above the eaves. g;

4. A blank for a cerner cap having 'a hole therein which has four rentrant sides spaced apartl at the corners.

5. A corner cap comprising a sheet metal. blank having two intersecting grooves therein, and a hole at such intersection, the edges of said hole being concave arcs which extendA nearly the full width of the respective grooves.

6. A sheet for a, car roof comprising a blank, the corners at one end of which are doubled back and whose side margins are bent to form upstandinv flangeswhich' con-.c tinue through saiddoubcled corners.

7. A sheet for a car roof comprising a doubled back, and whose side'margins are bent to form upstanding flanges which continue through such doubled corners, said end being turned downwardly through said double corners.

8. A sheet for a car roof comprising a i blank, the corners at one end of which are doubled back, and whose side margins are bent to form upstanding flanges which continue through said doubled corners, said end being turned downwardl and the o posite end having a rebent ange, and t e metal in the angles between the top and side flanges being doubled flatwise alongside of the top flange. e

9. A sheet for a car roof comprisinga blank, the corners at one end of which are doubled back, and whose side margins are bent to form upstanding flanges whlch continue through said doubled corners, said end being turned downwardly andthe opposite end having a rebent upstanding flange whose endmost portions are notched, and the metal in the angles between the top and side anges being doubled atwise alongside of the top Hange.

' 10. A )ointhcap for a. car roof comprising a metal strip having an .upstanding longitudinal groove and notches at the ends of said groove, one end of said sheet having upstanding flanges 'and the other end of saidsheet being bent downwardly.

11. A joint cap for a car roof comprising Y a metal strip having an upstanding longitudinal groove and notches at the ends of said groove, one end of said sheet having upstanding flanges, the surplus metal between the groove and the anges being folded back to form solid corners.

12. An outside metal 'ar roof comprising wooden 'sheathing and metal roof sheets restingl latwise thereon, said roof sheets eX- tending from the eaves toward the ridge and shaving upstanding'side Hanges, joint caps having an upstandinfr grooved portion adapted to receive side anges without bind'- ing them and having the 'sides of their grooves corrugated vertically to stiften them, and clipsat the eaves for securing said joint caps without binding them.

Signed at St. Louis, Missouri, this 19th day of January, 1909.

JOHN J. HOFFMAN. Vitnesses JAMES A. CANN, G. A. PENNINGTON. 

